CN101319499B - Pile forming method and device for screwed pedestal pile with large flow concrete filled by hole drilling pump - Google Patents
Pile forming method and device for screwed pedestal pile with large flow concrete filled by hole drilling pump Download PDFInfo
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- CN101319499B CN101319499B CN2007100723250A CN200710072325A CN101319499B CN 101319499 B CN101319499 B CN 101319499B CN 2007100723250 A CN2007100723250 A CN 2007100723250A CN 200710072325 A CN200710072325 A CN 200710072325A CN 101319499 B CN101319499 B CN 101319499B
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Abstract
The invention relates to a pile-forming method for drilling-pump poured high-flow concrete expanded-bottom screw piles as well as a device thereof, aiming to solve the technical problem that the prior art cannot integrate bottom expansion with pile body threading for concrete filling piles through one step. The method comprises the following steps that: after a hole is drilled to a designed elevation, grouting, drilling tool lift and bottom expansion are carried out, and the bottom expansion height is between 1 and 1.5 m; after a drilling tool is dropped to a position which is 30 to 50 cm away from the bottom of the hole, concrete grouting is carried out; when the drilling tool is lifted to an upper bottom expansion edge, grouting is stopped and a bottom expander is reset; then concrete compression, drilling tool lift and thread rolling to an orifice are carried out simultaneously; and the drilling tool is lifted out, and a steel reinforcement cage is dropped for forming a pile. The pile-forming device is a hollow revolving dual-purpose piecing device, and is connected respectively with oil cylinders of the bottom expander and a thread rolling device through a tee, so as to expand bottom and roll thread. The device is characterized in simple structure, ingenious design, easy operation, etc.
Description
Technical field: the present invention relates to a kind of piling method and facility that are used for the pile foundation engineering construction.
Background technology:, the preparation method and the pile making device thereof of multiple boring base-enlarging method, helical burr ram occurred at present in the pile foundation construction field.
Like patent of invention, a kind of job practices of castinplace pile, the patent No. 96119602.5, what relate to is exactly a kind of job practices of helical burr ram, and this method is no doubt fine, but its facility are too big, and cost is too high, and stationary problem is difficult to resolve determines, so be difficult for promoting.
Patent of invention, the auger stem central pump is annotated superfluidity concrete helical burr ram job practices and thread making device thereof, number of patent application 200510010093.7.This method tells that just people make screw thread with hydraulic jack, but does not inform through what device and give the oil cylinder oil supply transmission of rotating synchronously with drilling tool, makes this flexible major issue of the very heavy piston rod of oil pressure; Its structural principle is showed to people, this shows this patented technology scheme be one only with imagination " perpetua mobilia ".
Patent of invention, the pile making device of helical burr ram and piling method, number of patent application 200610009679.6 and patent of invention; " piling method of borehole pump pouring large flow concrete ring stake and pile making device; technical scheme is oil cylinder and is located at drilling rod top, flexible through oil cylinder, pulling wire rope; make its connection reaming or rolled thread device accomplish reaming and manufacture screw thread, thereby improve the purpose that single pile carries power.But facts have proved that such scheme is because the telescopic resilience of wire rope is bigger, the stroke of oil cylinder piston bar has satisfied not the requirement of the rope distance of rapid elongation gradually.
Summary of the invention: the purpose of the piling method of borehole pump pouring large flow concrete of the present invention and device thereof (being called for short the LS stake) is when addressing the above problem; Bottom-spreading technology and screw thread technology are organically combined; Form and expand end helical burr ram; That is to say existing bottom enlarged footing on a pile body, threaded again a kind of type on the pile body.
Method of the present invention realizes through following steps:
1, after auger machine is drilled into design elevation, starts mud pump pressure cement grouting, do not stop to bore and carry drilling tool in (rotation) and open reaming plate (cutter) and rolled thread plate (wheel) the expansion end, expand end height 1～1.5m, then fall after rise at the bottom of drilling tool to the hole;
2, during 30～50cm, open concrete pump pressure concrete injecting when mentioning drilling tool once more at the bottom of the hole; And the limit pressure concrete injecting, drilling tool to reaming upper edge (1～1.5m place) is carried on mud jacking limit, limit.
3, regain reaming plate (cutter), stop mud jacking, and madjack pipe is connected pressure wind with the air compressor machine pipe.
4, reaming is when (end), and the rolled thread device is also ejected by oil cylinder simultaneously, waits to expand the end and accomplishes the back when regaining piston rod, and roll extrusion (drawing) thread plate (wheel) installs, and is stuck, can only be along with the rotation of drilling tool, and roll extrusion on hole wall (drawing) screw thread;
5, along with the continuous pressure of concrete is irritated; Drilling tool constantly rotates and carries (carry that the drilling speed degree will be directly proportional with the amount of pumping into of concrete and drill bit and rolling screw-threads device are embedded in 1～2.00m place in the concrete all the time), and after proposing the aperture, thread making is accomplished; The rig displacement, install reinforcing cage and absolute altitude place pile.
6, construct before the boring of next position, hole, push back the Spring Card bearing pin, rolled thread plate (wheel) is resetted.
Pile making device of the present invention is by the revolution of hollow dual-purpose (oil supply and notes concrete) tieing (Fig. 3), oil inlet pipe (3), and oil return pipe (10) expands the end (hole) oil cylinder (4), and rolled thread oil cylinder (5) expands the end (hole) assembly (Fig. 7) and rolled thread assembly (Fig. 4), (Fig. 6) composition.
The dual-purpose tieing of the revolution of hollow (Fig. 3), by upper flange 24, lower flange 25, overcoat 26; 29, the three groups of oil seal rings 30 of 28, the second groups of oil seal rings of 27, the first groups of oil seal rings of revolving hollow spindle; Thrust clutch shaft bearing 31, the second bearings 33, drainback passage hole 32, oil inlet passage hole 1 composition such as grade.
Expand the end (hole) device (Fig. 7), by liner plate 14, oil cylinder 4, movable rod 19 expands plate (cutter) 7, fixed pin shaft 18, load baffle ring 17 compositions such as grade.
Rolled thread device (Fig. 4, Fig. 6), by liner plate 14, rolling plates (wheel) 16, load baffle plate 17, fixed pin shaft 18, stressed top board 13, bayonet lock axle 15, tubular spring detent chamber 20, marshall springs plate (back is stifled) 21, bolt 22, spring 23 compositions such as grade.
The operating principle of pile making device of the present invention is: through hydraulic oil pump; With hydraulic oil through the fuel feed hole 1 between first and second oil seal ring on the dual-purpose joint of the revolution of hollow, oil inlet passage 2, oil inlet pipe 3; Get into the fuel feed hole (6) of reaming oil cylinder (4) and rolled thread oil cylinder (5) respectively through the 1st threeway (16); The oil cylinder piston bar stretches out reaming plate (cutter) (7) and rolled thread plate (wheel) (8), pushes hole wall respectively to, along with the rotation of drilling tool; Expand cutter (plate) commentaries on classics of the silt particle on the hole wall is scaled off the formation enlarged footing, rolled thread plate (wheel) roll extrusion on hole wall (drawing) goes out rill.After accomplishing the expansion end (hole); Regain piston rod; That is: hydraulic oil reaches the 2nd threeway 34 and oil return pipe (10) drainback passage (11) on the dual-purpose joint of revolution, second and third oil seal ring 29, the 32 hydraulic return pumping plants of the drainback passage hole between 30 through oil cylinder oil return oil outlet (9).Regain when the oil cylinder piston bar and will expand at the end that (hole) plate (cutter) resets and rolled thread plate (wheel) is dropped (receipts have not been gone back).Reason is: when the piston rod of oil cylinder 5 through being welded in the stressed top board 13 on the portable plate 8, when movable rolling plates was turned to hole wall, hidden Spring Card bearing pin 15 in liner plate 14 back just ejected, and rolling plates 8 is blocked.So after accomplish expanding the end (hole), when regaining the piston rod of oil cylinder (two oil cylinder work are carried out synchronously), rolled thread plate (wheel) 8 just time not original position, can only be along with rig be rotated in roll extrusion on the hole wall (drawing) rill.Before drilling tool proposes next hole of construction, aperture, can Spring Card bearing pin (15) be set back.
The beneficial effect of piling method of the present invention is:
1, on same pile, its bottom is big head (floor space is greater than the pile body cross-sectional area) thereby improves the end load that pile body has screw thread to be embedded in the hole wall can improve collateral resistance;
2, this method is widely used, and is not only applicable to the foundation soil of matter condition usually, and more is applicable to weak foundation soil and the foundation soil that groundwater table is higher and the layer of sand buried depth is thick;
But 3 disposal pore-forming piles, easy construction, speed is fast, saves time, laborsaving, saving of labor.
The beneficial effect of pile making device of the present invention is:
1, two oil cylinders are separately positioned on the same side (one in front and one in back), and below helical blade, can not influence the transmission of the unearthed blade of boring.
2, two oil cylinders are through two threeway parallel connections, and synchronous working is with one group of inlet and outlet of fuel channel system, can satisfy technological requirement.
3, it is simply ingenious that roll extrusion (drawing) screw device Spring Card bearing pin designs; Through its ejection roll extrusion (drawing) thread plate (wheel) is blocked; Oil cylinder piston bar and reaming oil cylinder piston bar are regained synchronously; Minimizing and the time of having avoided piston rod in the hole, to work reach mixes soil to its degree of wear, thereby has increased the application life of oil cylinder.Simultaneously, also reduced by a cover oil piping system.
Description of drawings
Fig. 1, be the work progress sketch map that borehole pump pouring large flow concrete of the present invention expands the piling method of end helical burr ram (LS stake).
Fig. 2, be the general structure sketch map that the present invention looks for a device.
Fig. 3, be the structural representation of the dual-purpose piecing devices of revolution of hollow.
Fig. 4, be the sketch map of roll extrusion (drawing) screw device
Fig. 5, be the sketch map of fixed pin shaft
Fig. 6, be the static and working state schematic representation of Spring Card bearing pin.
Fig. 7, be the Counterboring apparatus working state schematic representation
The specific embodiment
This embodiment of the specific embodiment one (referring to Fig. 1) method realizes through following steps:
1, auger machine is holed and to design elevation, is started slush pump; Slurry-feeding hole (35) mud jacking in the hole on pump-injecting concrete swivel coupling bend pipe; Carry drilling tool simultaneously and pull hydraulic control lever and reaming plate (cutter) is opened in oil cylinder work carry out reaming; (at this moment the rolled thread plate is also opened simultaneously), reaming height 1～1.5m
2, fall after rise at the bottom of drilling tool to the hole, when drilling tool is mentioned at the bottom of the hole 20～30cm once more, open concrete pump pressure concrete injecting; And limit pressure concrete injecting; Carry drilling tool on limit rotation (rig does not stop the rotation) the expansion end, the limit, when limit mud jacking to reaming upper edge (1～1.5m place), stop mud jacking; Regain reaming plate (cutter) simultaneously, and it is resetted.
3, continue to carry drilling tool in the rotation; At this moment the speed of carrying brill will be directly proportional with the amount of pumping into of concrete, and drill bit will be embedded in 1～2m place below the concrete face all the time, simultaneously; Roll extrusion (drawing) screw device is also started working (opening simultaneously with Counterboring apparatus) already, rolling plates (wheel) roll extrusion rill on hole wall.Carry in the rotation along with drilling tool, instantaneous by the rill that roll extrusion (drawing) goes out by concrete filling (rolling device is all the time in concrete), carry limit roll extrusion (drawing) rill, limit pressure concrete injecting in the rotation of drilling tool limit.
4, with behind the drilling tool rotation proposition aperture, the displacement of stall rig, install reinforcing cage is concrete acceptance of the bid eminence pile in the hole.
The specific embodiment two: the pile making device of (referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7) this embodiment is by detachable bit plate 25; Expand end oil cylinder 4; Roll extrusion (drawing) screw thread oil cylinder 5, reaming (mouth) plate (cutter) 7, roll extrusion (drawing) thread plate (wheel) 8; Oil inlet pipe 3, oil return pipe 10 are accomplished and are expanded the end (hole) and roll extrusion (drawing) screw thread.On the dual-purpose piecing devices of the revolution of hollow revolving hollow spindle 27 is set respectively, overcoat (not rotating) 26, upper flange 24, lower flange 25; The first oil seal ring, 28, the second oil seal rings, 29, the three oil seal rings 30, fuel feed hole 1; Oil inlet passage 2, drainback passage 11, drainback passage hole 32; Thrust first is held axle 31, the second bearings 33, forms rotation oil supply oil return system.
When hydraulic oil pumps through Hydraulic Station; Fuel feed hole 1 on the dual-purpose joint of revolution, overcoat (not rotating) 26, oil inlet passage 2 (by the first oil seal ring and second seal ring seal) gets into the oil inlet pipe 3 that is arranged on the drilling rod outside on the entering axis of rotation 27; And pass through the fuel feed hole 6 that the 1st threeway 16 gets into two oil cylinders respectively along drilling rod is descending; At this moment oil cylinder is started working, and respectively piston rod is stretched out, and will expand plate (cutter) 7 and roll extrusion (drawing) thread plate (wheel) 8 ejects; After accomplishing reaming (end), withdrawal oil cylinder piston bar will expand plate (cutter) and retract original position through movable rod 19; Hydraulic oil gets into oil return pipes 10 through oil cylinder oil outlet 9 through the 2nd threeway 34, and oil return pipe 10 turns round with hollow that drainback passage 11 is connected on the dual-purpose joint, via the 32 hydraulic return stations, drainback passage hole of the second oil seal ring 29 and the 3rd oil seal ring 30.
After the specific embodiment three, (seeing Fig. 4, Fig. 6) are accomplished and expanded the end (hole), regain and drive expansion plate (cutter) when the oil cylinder piston bar and regain original position; And roll extrusion (drawing) plate (wheel) 8 is just returned by the card back and has not been gone, and can only wait behind the pile before next position of construction it to be pushed back.Its reason is: when the oil cylinder piston bar with roll extrusion portable plate (wheel) along fixed pin shaft 18 when hole wall rotates and reaches predetermined extent, be arranged on Spring Card bearing pin (15) ejection automatically of its liner plate 14 back, it is blocked and can not turn round.Because the piston rod top is not dead the connection with it, weld a stressed top board 13 by the upper end again at it, unaffected with it when piston rod stretches out the completion mission and is retracted to oil cylinder.
When reaming, roll extrusion (drawing) screw thread, owing to receive the resistance of hole wall silt particle bigger, fixed pin shaft 18 restricted diameter, what can not be provided with is too thick, improves resistive drag force so placed load baffle ring 17 in the above.
The bayonet lock axle is sitting on the spring 23, and inserts in the tubular spring detent chamber 20, is sitting on the pressing plate (back stifled) 21, and fixing with bolt 22, when to its maintenance or when breaking down, will the back blocks up 21 and opens, and spring 23 and bayonet lock axle 15 just can take out, and be very convenient.
The design of roll extrusion (drawing) screw device is ingenious, reasonable; Can save a cover hydraulic transmission; Owing to the oil cylinder piston bar that acts on it can be regained with reaming oil cylinder piston bar simultaneously, in its whole roll extrusion (drawing) threaded process, only depend on the Spring Card bearing pin to control, therefore simultaneously; Piston rod wearing and tearing in silt particle and the concrete in the hole have been reduced, application life of having improved oil cylinder.
Claims (8)
1. a borehole pump pouring large flow concrete expands the piling method of end helical burr ram; The piling method that it is characterized in that borehole pump pouring large flow concrete expansion end helical burr ram is realized through following steps: after one, auger machine is drilled into design elevation; Start mud pump pressure cement grouting; And on carry drilling tool and pull the hydraulic operation bar and open and expand base plate and expand the end with the rolled thread plate, expansion end height 1～1.5m then falls after rise at the bottom of drilling tool to the hole; Two, during 30～50cm, open the concrete pump when mentioning drilling tool once more at the bottom of the hole, pressure concrete injecting, and limit pressure concrete injecting are carried drilling tool in the rotation of limit, and limit mud jacking to reaming upper edge i.e. 1～1.5cm place; Three, regain the reaming plate and make its reposition, stop mud jacking, and madjack pipe is connected pressure wind with the air compressor machine airduct; Four, rolled thread is be rotated in hole wall on the roll extrusion rill of rolled thread plate along with drilling tool; Along with the continuous pressure of concrete is irritated, drilling tool is also constantly carried in the rotation, and carry the drilling speed degree and be directly proportional, and drill bit is embedded in concrete 1～2m all the time with the rolled thread device with pumping into the concrete amount, after going up the proposition aperture to the drilling tool rotation, the thread making completion; At this moment rig displacement, install reinforcing cage is concrete cage top mark eminence pile in the hole; When five, constructing next position, hole, push back the Spring Card bearing pin before the boring, make the rolled thread sheet reset.
2. piling method according to claim 1 is characterized in that grouting amount: Φ 400mm～Φ 600mm stake should not be less than 0.2m
3, be increased to 0.3m greater than Φ 600mm stake
3, water/binder ratio 0.62 is advisable.
3. piling method according to claim 1, the slump that it is characterized in that the pumping concrete is 20～25cm.
4. piling method according to claim 1 is characterized in that grouting pressure is not less than 3～6kg/cm
2
5. the pile making device of a borehole pump pouring large flow concrete expansion end helical burr ram piling method is characterized in that it is to be made up of device, rolled thread device at the bottom of the dual-purpose piecing devices of the revolution of spiral drill, drill bit, hollow, oil cylinder, the expansion;
The dual-purpose piecing devices of the revolution of hollow are made up of upper flange (24), lower flange (25), revolving hollow spindle (27), overcoat (26), clutch shaft bearing (31), second bearing (33), fuel feed hole (1), oil inlet passage (2), the first oil seal ring (28), the second oil seal ring (29), the 3rd oil seal ring (30), drainback passage (11), spill port (32);
Counterboring apparatus is made up of liner plate (14), movable rod (19), expansion plate (7), fixed pin shaft (18), load baffle ring (17), expansion end oil cylinder (4);
The rolled thread device is by liner plate (14), rolling screw-threads plate (16), fixed pin shaft (18), load baffle ring (17), stressed top board (13), Spring Card bearing pin (15), spring (23), tubular spring detent chamber (20), marshall springs pressing plate (21), and rolled thread oil cylinder (5) is formed.
6. pile making device according to claim 5 is characterized in that expanding helical blade below direction of rotation that the end and rolled thread device all be arranged on the drill bit top one in front and one in back; Expand end device preceding, the rolled thread device after, the turnover oilhole of two oil cylinders is oppositely arranged through threeway and is connected in parallel.
7. pile making device according to claim 5 is characterized in that rolled thread plate (8), when the oil cylinder piston bar prolongs it fixed pin shaft (18) and pushes hole wall to and reach desired location, and the Spring Card bearing pin (15) that is located at liner plate (14) back ejects automatically, and it is blocked.
8. pile making device according to claim 5 it is characterized in that bayonet lock axle (15) is the circular shaft of band shoulder, and one is sitting on the spring (23), and is located in the tubular spring detent chamber (20); Spring is sitting on the bayonet lock chamber marshall springs plate (21), and the marshall springs plate is connected with bolt (22) with the bayonet lock chamber, and laterally weld perpendicular to liner plate (14) bayonet lock chamber (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100723250A CN101319499B (en) | 2007-06-07 | 2007-06-07 | Pile forming method and device for screwed pedestal pile with large flow concrete filled by hole drilling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100723250A CN101319499B (en) | 2007-06-07 | 2007-06-07 | Pile forming method and device for screwed pedestal pile with large flow concrete filled by hole drilling pump |
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| Publication Number | Publication Date |
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| CN101319499A CN101319499A (en) | 2008-12-10 |
| CN101319499B true CN101319499B (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100723250A Expired - Fee Related CN101319499B (en) | 2007-06-07 | 2007-06-07 | Pile forming method and device for screwed pedestal pile with large flow concrete filled by hole drilling pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733432A (en) * | 2012-07-11 | 2012-10-17 | 宁波浙东建材集团有限公司 | Pressure fluid supply pipe supporting device |
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| CN103410452B (en) * | 2013-08-16 | 2016-02-03 | 黄朝阳 | A kind of spiral drilling machine for the stake of forming thread type and pile forming method thereof |
| CN105401573A (en) * | 2015-11-13 | 2016-03-16 | 崔海波 | Novel precast composite pile forming method integrating drilling, grouting and base expanding |
| CN108179741A (en) * | 2018-03-26 | 2018-06-19 | 卓典机器人（海南）有限公司 | A kind of screw rod pile and combined drilling tool and its engineering method |
| CN110717215B (en) * | 2019-10-24 | 2021-08-27 | 南华大学 | Method, device, equipment and system for determining pile-forming drilling speed of compaction threaded pile |
| CN111305754B (en) * | 2020-02-27 | 2021-07-30 | 中铁建大桥工程局集团第五工程有限公司 | Bored concrete pile construction method based on full-hydraulic power head drilling machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102733432A (en) * | 2012-07-11 | 2012-10-17 | 宁波浙东建材集团有限公司 | Pressure fluid supply pipe supporting device |
| CN102733432B (en) * | 2012-07-11 | 2016-03-30 | 宁波浙东建材集团有限公司 | A kind of pressural fluid supply line bracing or strutting arrangement |
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| CN101319499A (en) | 2008-12-10 |
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